Rolling stock



R. T. GLASCODINE ROLLING STOCK Filed March 5, 1931 FlGl.

FIG.5.

INVENTQR E2 RmHARoT oMsoN GILASCODINE ATTORNEY April 18, 1933.

Patented Apr. 18, 1933 PATENT OFFICE RICHARD THOMSON GLASCODINE, OF LONDON, ENGLAND ROLLING STOCK Application filed March 5, 1931, Serial No. 520,405, and in Great Britain October 10, 1930.

This'invention relates to rolling stock and has more especial reference to the axle guards employed therein as guides for the axle boxes.

-The main object of the invention is to reduce the wear and tear imposed on the axle boxes, guards and wear plates, and particularly to eliminate the hammer blows incident on track inequalities, starting and braking, which produce crystallization of the metal, with ultimate fracture and thereby necessitate expensive replacements and incur danger to the stock and its passengers or freight.

A second object is to render the stock substantially more silent when running, and

further and favourable objects will appear from the following description.

In accordance with the present invention washers or liners of india-rubber are associated with the axle guard in such manner as to provide a vibration absorbing cushion between the floating axle box and the fixed axle guard.

Conveniently an india-rubber washer or liner is interposed between each wear plate and its carrying web or horn of the axle guard so that while the axle box is free to move relatively of the wear plates in a vertical plane any longitudinal rocking of the axle box is damped by the washers or liners located between the wear plates and the axle guard.

According to one embodiment of the invention as applied to a bogie truck the opposed faces of the axle guard secured to the bogie frame are lined with pads of india-rubber say one-half inch thick, over which wear plates of customary channel form are positioned, the axle box floating in a vertical plane between such plates.

Instead of the wear plates being fixedly mounted on the axle guard by rivets as customary, fixed guides in the form of vertically spaced lugs or rivets are provided on the guard which engage horizontal guide slots in the walls of the wear plates, thereby permitting the limited horizontal movement of the latter consequent on distortion of the rubber pads.

Preferably such guides are arranged some ,50 considerable distance apartso as to eliminate any possibility of the wear plates rocking on the axle guard as a result of movement of the axle box.

Where the invention is applied to existing rolling stock the portion of the opposing faces of the axle guard normally in abutment with the wear plates may be cut away or removed to provide the space in which the india-rubber washers or liners can be located, and these latter preferably extend over the whole abutment area between the wear plates and the axle guard.

To prevent the displacement of the indiarubber washers or liners, the cut away portions of the wear plates through which the equalizer bars pass may be provided with bent over lugs or flanges, these plates being customarily constructed of spring steel and in place of the tight fit usually arranged between the wear plates and the axle guard, clearance will be provided in order that the wear plates may move freely except for the resistance imposed by the rubber washers or sleeves.

Reference will now be had to the accompanying drawing which illustrates the in vention in a preferred form and in which Fig. 1 is an elevation of an axle guard having wear plates mounted with vibration absorbing cushions according to the invention.

Fig. 2 is a plan, and

Fig. 3 a part sectional elevation showing the location of the india-rubber pads forming the vibration absorbing cushions.

Fig. 4 is a detail view of one wear plate detached, and A Fig. 5 is a similar view of a preferred form of india-rubber pad.

Referring now to the drawing, the form illustrated represents an application of the invention to the axle boxes and guards of a bogie truck, 1 designating the truck frame and 2 the axle guard having depending horns or pedestals 3 and 4 with an intermediate cavity to receive an axle box 5 of any suitable form.

The axle guard-2 is of channel section having side walls 6 and 7 which extend upward- 1y on each side of the truck frame 1 and are shown secured thereto by means of rivets 8.

In the form shown the central web 9 of the axle guard is cut away to form an aperture through which the equalizer bar resting on the top of the axle box 5, and supporting the usual truck bolster, may pass, and wear plates 10 and 11 for the respective horns 3 and 4 of the axle guard are provided also of channel form. their opposedvertical faces 12 and 13 engaging the vertical walls of the axle box 5 so as to permit the free vertical movement of such box.

The opposed vertical faces 12 and 13 of the Wear plates are also cut away to provide an aperture 14 in which to accommodate the equalizer bar, and the side walls or flanges 15 and 16 of each wear plate overlie the horns or pedestals 3 and 4 of the axle guard 2.

In order to provide the vibration absorbing cushion between the floating axle box 5 and the fixed axle guard 2 according to the invention, washers or liners of india-rubber in the form of pads 17 and 18 are provided between the wear plates 10 and 11 and the web portions 9 of their respective horns 3 and 4, and insteadof wear plates 10 and 11 being fixedly mounted on the axle guards as customary vertically spaced fixed guides 19 and 20 on the born 3 and 21 and 22 on the horn 4 are provided, which ride in horizontal slots 23 and 24 in the side walls 15 and 16 of the wear plate 10 and 25 and 26 in the wear plate 11 respectively so as to permit some free lateral movement of said wear plates.

To remove any possibility of the wear plates 10 and 11 rocking about their guide slots 23, 24, and 25, 26 respectively, the guide members 19, 20, 21, 22 in the form of rivets are spaced well apart as shown.

Preferably the india-rubber pads 17 and 18 extend upwardly on each side of the aperture 14 in their respective wear plates, thus covering the whole abutment area thereof, and thereby further preventing any tendency to rocking of such wear plates, the rubber pads 17 and 18 being retained in place by the side walls 15 and 16, and also if desired by means of terminal lips 27 on each side of the wear plate aperture 14 as shown in Figs. 2 and 4.

Any desired initial compression may be imparted to the rubber pads 17 and 18. which can be half-an-ineh thick. for instance by appropriately positioning the guide slots 23, 24, 25, 26 in the wear plates 10 and 11 respectively, and thereby constraining these latter, it being preferable for the axle box 5 to be thus freely movable vertically between the Wear plates 10 am. 11, and in place of plain india-rubber pads such as the pads 17 illustrated in Fig. 5 cushions may be formed from india-rubber moulded through a metal reinforcing plate.

It will be seen that, with such vibration absorbing cushions, the front and rear walls of the axle box 5 are engaged by the resiliently mounted Wear plates 10 and 11, which float horizontally on the guide members 19, 20 and 21, 22 when operating, and thus any tendency to longitudinal rocking of such axle box is eliminated. and the vibrations incident on track inequalities when running are considerably damped, while further any tendency to lateral vibration may be eliminated by extending the cushions or pads, so that they are interposed between the side walls 15 and 16 of the respective wear plates 10 and 11 and the horns or pedestals 3 and 4 of the axle guard 2. By thus extending the pads, the axle box flanges 30 are provided with resilient or shock absorbing guides, i. e. the side walls 15 and 1(3 of the wear plates, any lateral shocks being thereby accommodated.

Although the invention has been described with more particular reference to its application to axle guards or pedestals for bogie trucks, it will be understood that it is also applicable to the axle guards of other railway rolling stock, plain rectangular india-rubber pads being suitable in certain cases and appropriate retaining lips being provided on the wear plates or guards where desired.

Advantageously where applied to bogie trucks the axle box may be carried as shown in co-pending application Serial No. 520,404.

By the present invention the normal running vibrations are considerably damped, so that the riding comfort and durability of the rolling stock is considerably enhanced, while the danger of crystallization and fracture is correspondingly reduced.

What I claim is 1. In rolling stock the combination of an axle box, an axle guard carried by the stock, horns to said guard, vertically spaced guide members on each of said horns, flanged wear plates floating horizontally on said guide members and engaging vertical faces of said box to permit free vertical movement thereof, and india-rubber pads constrained between such wear plates and said horns to damp vibration of said box.

2. In rolling stock, the combination of an axle box, an axle guard carried by the stock, channel section horns to said guard, duplicate vertically spaced guide members to each wall of said horns, Wear plates engaging the vertical faces of said box to permit free vertical movement thereof, flanges on said wear plates overlying said channel walls and slotted to receive said vertically spaced guide members, and india-rubber pads constrained between such wear plates and said horns to damp vibration of said box.

3. In rolling stock, the combination of an axle box, an axle guard carried by the stock, horns to said guard, vertically spaced guide members on each of said horns,

wear plates floating horizontally on said ide members, india-rubber. pads constrained tween such wear plates and said horns and providing a vibration absorbing mounting for said box, and peripheral lips to said wear plates locating and retaining said india-rubber pads.

4. In rolling stock, the combination of an axle box, an axle guard carried by the stock, horns to said guard, wear plates engaging the vertical faces of said box, india-rubber pads located between such wear plates and said horns, vertically spaced guide members on each of said horns and slotted flanges to said plates located by said guide members so that the wear plates while being movable t0 cushion vibration of said box apply initial comfiression to said ads.

ICHARD TH MSON GLASCODINE. 

